PROGRESS IN ORGANIC COATINGS
·
2022
·
IF 6.206
Tengle Wang,Qi Guo,Tian C. Zhang,Yu-Xin Zhang,Shaojun Yuan
Superhydrophobic coatings have great potential applications in protecting metallic substrates due to their excellent water-repellency and high corrosion resistance , however, most of their preparation processes are complicated, expensive and difficult to scale up for practical applications. Herein, we reported a facile, low-cost and large-scale-preparation method to fabricate superhydrophobic coatings on the magnesium alloy , of which superhydrophobic hexadecyltrimethoxysilane (HDTMS)-modified diatomite powder was first synthesized by electrochemical deposition method, and subsequent spray coating of the epoxy resin and superhydrophobic diatomite mixture was performed to form superhydrophobic composite coatings on the alloy substrates. The influencing factors of surface wettability of the modified diatomite were comprehensively investigated. Under the optimized synthesis condition of a current density of 0.033 A·cm −2 and electrodeposition time of 2.5 h, the superhydrophobic diatomite powder had an approximately 260 % (in mass fraction) production yield. The spray-coated composite coating delivered superior superhydrophobicity with water contact angle of circa 157° and self-cleaning ability. Such superhydrophobic coating also exhibited a high corrosion protection efficiency of circa 99.8 % and excellent anti-icing performance, and was demonstrated to own ISO grade 1 adhesion and good chemical stability to bear 90 days of immersion in a 3.5 wt% NaCl solution and 20 days of salt spray testing without corrosion. In addition, the superhydrophobic composite coating exhibited great robustness against water impact and sand impact. Therefore, this diatomite/epoxy resin-based superhydrophobic coating can be effectively used for Mg alloy anti-corrosion and has the potential in large-scale production for practical applications.
研究领域:
材料科学
·
腐蚀与防护
✓ 已验证
产品关联
DOI
高影响因子
Frontiers in Materials
·
2021
·
IF 3.515
Han Xing,Hu Jia,Wang Yong-Qin,Xiao Tian-Bing,Xia Wei,Chen Yan-Ning,Wu Liang
A super-hydrophobic anti-corrosion film was facilely prepared via in situ growth of layered double hydroxides (LDHs) on the etched AZ31 magnesium alloy and then modification by 1H, 1H, 2H, 2H-perfluorooctyltrimethoxysilane (PFOTMS) in this work. The morphology, structure, composition, surface roughness and water contact angles (WCA), and the anti-corrosion performance of the samples were investigated. The results revealed that the micro/nano hierarchical surface morphology of the films was composed of island structures obtained after chemical etching and MgAl-LDH nanowalls grown in situ. The best hydrophobicity (CA = 163°) was obtained on the MgAl-LDHs with the maximum surface roughness. Additionally, the potentiodynamic polarization, electrochemical impedance spectroscopy, and immersion test indicated that the super-hydrophobic LDH films provided better corrosion resistance to AZ31 magnesium alloy due to the double-protection derived from the LDHs and super-hydrophobic properties. Furthermore, the contact angle could be kept at above 140° after dipped in 3.5 wt% NaCl solution for 6 days.
研究领域:
材料科学
·
表面工程
·
腐蚀与防护
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2021
·
IF 4.539
Lei Kang,Qiao Zeng,Lanjie Shi,Xiaoming Zhou,Mengzhou Wang,Shan Wan,Longfei Song,Bokai Liao,Xingpeng Guo
Low-cost and scalable fabrication processes are needed to prepare efficient superhydrophobic materials, particularly for oil/water separation and metal protection against severe oil spills and metal corrosion. Here, an effective oil/water separation mesh with long-lasting acid/base durability and corrosive resistance is reported. In this work, the mesh was fabricated by simply spraying nano soil particles cross-linked with melamine resin and impregnating them with polyethylene (PE) solution. The multi-layered morphology obtained from the spraying and impregnating process which provides the unique wetting properties for the stainless steel (SS) mesh, such as superhydrophobicity and low water adhesion. Also the low chemical activity of alkyl sp 3 carbon-hydrogen bonds provides acid/base resistance for the manufactured material. By utilizing these unique properties, not only can gravity-driven efficient oil/corrosive fluid separation be achieved, but the fabricated superhydrophobic stainless steel (SSS) mesh retains high separation efficiency (> 99%) and superhydrophobicity (water contact angle, WCA > 150°) in reuse process of wastewater in treated oil. More importantly, this excellent protection can effectively reduce the corrosion rate of the mesh by more than two orders of magnitude (SS mesh i corr 1.82 × 10 −8 A·cm −2 ; SSS mesh i corr 9.84 × 10 −11 A·cm −2 ) which providing a long-lasting protection even after 16 days of immersion in 3.5 wt% NaCl solution. All in all, the easy operation, acid/base resistance, high separation efficiency, and corrosion inhibition efficiency of the SSS mesh give them great potential for oil/water separation and metal protection applications.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2022
·
IF 6.206
Qi Guo,Tengle Wang,Tian C. Zhang,Like Ouyang,Shaojun Yuan
The practical applications of magnesium alloys are significantly limited owing to being susceptible to corrosion. In this study, superhydrophobic double layered MgAl-LDH/epoxy (DMALE) composite coatings were fabricated on magnesium alloys by the combination of hydrothermal synthesis and spraying methods, which consisted of a bottom layer of MgAl-LDH(WO 4 2− )/epoxy coating and a top layer of superhydrophobic hexadecyltrimethoxysilane (HDTMS)-modified MgAl-LDH(CO 3 2− )/epoxy coating. The as-prepared DMALE coating delivered superior superhydrophobic and self-cleaning property. Such composite coating was demonstrated to possess good anticorrosion property, good chemical stability, and high abrasion resistance. This large-scale prepared composite coating is potentially useful for corrosion protection of magnesium alloys.
研究领域:
材料科学
·
腐蚀与防护
✓ 已验证
产品关联
DOI
高影响因子
Journal of Magnesium and Alloys
·
2025
·
IF 13.8
Xiaomeng Yu,Yuejun Ouyang,Jilan Long,Dan Xu,Guangming Liang,Zhiyuan Feng,Dongmei Pu,Qiwen Yong,Zhi-Hui Xie
Conventional nanoparticles incorporated into epoxy coatings suffer from poor compatibility and insufficient corrosion improvement, hindering their practical applications. A dual-strategy approach integrating in-situ host–guest nanoconfinement and surface self-assembly was devised to fabricate 8HQ@ZIF-8/PDA smart nanocontainers. The guest 8-hydroxyquinoline (8HQ) was encapsulated within the zeolitic imidazolate framework-8 (ZIF-8) host, leveraging nanoconfinement effects. A bioinspired polydopamine (PDA) layer was then self-assembled on the 8HQ@ZIF-8 surface through dopamine oxidative self-polymerization, resulting in a robust nanocontainer architecture. Density functional theory (DFT) calculations verify that the molecular interactions between the PDA and the ZIF-8 surface was the chemical adsorption. The resultant 8HQ@ZIF-8/PDA retained the rhombic dodecahedral morphology and crystallinity of ZIF-8, demonstrating controlled pH-responsive release behavior. When incorporated into an epoxy (EP) resin matrix on magnesium alloy, the 8HQ@ZIF-8/PDA/EP smart composite coatings exhibited outstanding interfacial compatibility and long-term stability, achieving a low-frequency impedance (| Z |₀.₀₁ Hz ) of 2.49 × 10⁷ Ω cm², a maximum phase angle of 82.8°, and a breakpoint frequency ( f b ) of 63.34 Hz after 50 days of immersion in a 3.5 wt% NaCl solution. These findings highlight the exceptional self-healing and corrosion-resistant properties of the 8HQ@ZIF-8/PDA/EP smart composite coatings, underscoring its potential for protecting magnesium alloys in aggressive environments.
研究领域:
材料科学
·
防腐蚀工程
·
表面化学
✓ 已验证
产品关联
DOI
高影响因子
Surfaces and Interfaces
·
2025
·
IF 6.3
Wenjuan Cui,Zhengang Chen,Ruinan Xiong,Leyan Tang,Ling Zhu,Chenyang Cai,Xiaosong Zhou
Corrosion resistance is a critical challenge for magnesium alloys, particularly AZ31B, in aerospace, military, and biomedical applications. This study investigates the anti-corrosion performance of superhydrophobic SiO₂ NPs-modified PTFE/PUA hybrid coatings on AZ31B, fabricated using rod and spray painting techniques. The coatings exhibited excellent superhydrophobic properties, with contact angles exceeding 155° and a contact angle hysteresis (CAH) below 5° Electrochemical evaluations of superhydrophobic SiO₂ NPs-modified PTFE coatings demonstrated a reduction in i corr by four orders of magnitude compared to that of raw AZ31B Mg alloys, achieving a corrosion inhibition efficiency (η p ) of ∼ 99.9 % in a 3.5 wt % NaCl solution. The E corr shifted positively by 0.968 V and 1.022 V, respectively. Additionally, the R ct of the SiO₂ NPs-PTFE hybrid coatings increased by four orders of magnitude compared to blank PTFE-0-R coatings, indicating robust and enhanced corrosion resistance. The study also found minimal differences in corrosion protection based on fabrication technique, while SiO₂ NPs-PUA coatings showed limited effectiveness in corrosion resistance. These findings highlight the potential of superhydrophobic PTFE hybrid coatings in addressing corrosion challenges for magnesium alloys.
研究领域:
材料科学
·
腐蚀与防护
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2024
·
IF 11.2
Shuaiwei Peng,Tianguan Wang,Guang Huang,Zhuofu Tang,Ziya Shao,Zhiyuan Feng,Bing Lei,Guozhe Meng,Honglei Guo
Organic coatings are commonly used to protect the metals or alloys from corrosion. However, defects such as scratches or natural aging of the coating can induce unexpected diffusion paths for the corrosive media, so the wettability of repairing liquids and the selection of suitable repairing liquids are crucial. In this study, we systematically investigated the capillary impregnation phenomenon by using liquids with various surface tensions and glass capillaries with different surface energies. We utilized this regularity to instruct the defects repairing process. By using an ultra-depth field microscope, scanning electron microscope, and electrochemical analysis, two kinds of repairing liquids, high surface tension liquid (HSTL) and low surface tension liquid (LSTL), were investigated for repairing man-made defects of coatings. Our results showed that the substrate and the surface energy of the liquids significantly influence the infiltration of the repair liquid. By effectively leveraging the relationship between the repair liquid and the substrate, the repair agent can not only establish a uniform and dense repairing layer but also notably enhance the corrosion resistance of the defective coating. This study provides valuable insights into the repairing of coating defects, as well as liquids transportation, microfluidic chip design, and surface modification of microporous materials.
研究领域:
材料科学
·
腐蚀与防护
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Coatings Technology and Research
·
2025
·
IF 2.8
Xu Yangbo,Shen Rulin,Zou Xiangfu,Tang Juntao,Gong Yanling,Wan Wenhu,Guo Haibo
The harsh and complex nature of the marine environment can easily compromise protective coatings and lead to corrosion of the carbon steel substrate. Therefore, a marine anticorrosion coating with synergistically enhanced self-healing, abrasion resistance, and corrosion resistance is studied in this work. Coaxial electrostatic spinning nanofibers with nylon 6 (PA6) as shell and two-component epoxy resin as core were modified with SiO 2 and then embedded in epoxy resin coatings to create self-healing anticorrosion coatings. Tensile test results demonstrated that the PA6 shell nanofibers increased the coating's tensile strength by 15%. Meanwhile, the abrasion resistance of the composite coating with 1%SiO 2 nanoparticle was enhanced by 33%. Tafel polarization curves showed that the inclusion of core-shell nanofibers in the coating resulted in a self-healing ability, with an impressive self-healing efficiency of 99%. Low-frequency impedance modulus of electrochemical impedance spectroscopy (EIS) results demonstrated an improvement of nearly two orders of magnitude compared to the pure epoxy coating. Experiments illustrated that the coatings developed in this study for marine anticorrosion exhibit a synergistic enhancement effect on self-healing performance, abrasion resistance, and corrosion resistance.
研究领域:
材料科学
·
海洋工程
·
防腐蚀技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
·
2024
·Vol. 28
·期 8
·2515-2530
·
IF 2.6
Liu Cansen,Tai Xiaoming,Xu Jianyu,Xie Huisi,Li Jinyan
Rubber tire mold fouling is a severe problem leading to mold surface corrosion, tire defects, and extra energy consumption. Traditional mechanical and chemical cleaning is inefficient and induces mold surface damage. Low surface energy organic coating displays antiadhesive behavior but is susceptible to wear. Here, we develop a bioinspired Co-CeO 2 /MoS 2 coating with effective mechanical robustness, corrosion resistance, and antifouling behavior by leveraging a slippery liquid-infused surface (SLIPS) strategy. The micro-nanostructure of the coating serves as mechanical stability and anticorrosion skeleton with the infused lubricant acting as a slippery antifouling surface. The variation of microstructure, mechanical strength, corrosion resistance, and antifouling behavior of the coating with individual and synergistic addition of CeO 2 and MoS 2 is systematically characterized. The slippery Co-CeO 2 /MoS 2 coating shows excellent mechanical stiffness, corrosion resistance, and antifouling performances in rubber vulcanization conditions. Graphical abstract
研究领域:
材料科学
·
防腐蚀工程
·
生物仿生学
✓ 已验证
DOI
高影响因子
Asia-Pacific Journal of Chemical Engineering
·
2020
·Vol. 16
·期 1
·e2584
·
IF 1.06
Hao Xu,Guangming Lu,Shuan Liu,Jibin Pu,Shu Tian,Chunlong Mao,Shanjun Chen
A phytic acid-based surface tolerant epoxy coating was prepared, and the effect of phytic acid on the corrosion resistance of the composite coating on rusty carbon steel substrate was investigated. The results showed that the low-frequency impedance modulus of the composite coating on rusty carbon steel could reached 10 8 Ω·cm 2 order of magnitude after immersing for 480 h in 3.5 wt% NaCl solution. Compared with pure epoxy coating, the phytic acid-based surface tolerant epoxy coating on the rusty substrate exhibited better corrosion resistance even if with some artificial defects in the composite coating. The protective performance of the composite coating mainly came from the formation of a stable iron phytate chelate in the reaction of phytic acid and rust. For the rusty carbon steel, the original Fe 3+ on its surface was also transformed by phytic acid penetrating to the interface between the coating and the substrate. Therefore, a dense film was formed with the reaction of phytic acid and rust on the substrates, and the dense film became a part of the whole paint film, which could improve the corrosion resistance of the surface tolerant coating.
研究领域:
材料科学
·
腐蚀与防护
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
Small
·
2024
·
IF 13
Qi-Xuan Ma,Li Xu,Yong Fan,Li Wang,Jia-Ning Xu,Jie Zhao,Xiao-Bo Chen
This article aims to develop CeO 2 nanocontainer-constructed coating with a synergistic self-healing and protective nature through a simple mechanical blending technique to manage metal corrosion. The proposed coating exhibits excellent corrosion resistance, which is primarily attributed to the combination of thermal-driven healing and active corrosion inhibition. Paraffin wax and 2-polybenzothiazole-loaded CeO 2 nanotubes (CeO 2 -MBT) are directly doped into epoxy coating to perform such a multifunctional role. CeO 2 nanocontainers and encapsulated corrosion inhibitor MBT can be released by pH triggers to achieve instant corrosion inhibition upon the surface of metal substrate. In addition, any physical defects in the coating are responsively repaired by heating incorporated paraffin wax to regain structural integrity and consequent barrier function. Corrosion protection efficiency remains sufficient even after ten cycles of damage and healing. Such a multiple-functional coating strategy provides an alternative pathway toward efficient and sustainable performance to tackle corrosion-related challenges of metal components in both short-term and long-term services.
研究领域:
材料科学
·
腐蚀与防护
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2018
·
IF 3.779
Li Jiang,Junaid Ali Syed,Hongbin Lu,Xiangkang Meng
The enhancement in long-term corrosion resistance of conductive polymer coating is essential for the practical application, particularly to protect metallic bipolar plates in the aggressive environment of proton exchange membrane fuel cell (PEMFC). In this study, graphene oxide (GO) was introduced to polypyrrole (PPY) matrix, furthermore, PPY-GO composite coatings with different GO content were in-situ electrodeposited on 304 stainless steel (SS) bipolar plates to protect them from corrosion in the aggressive working environment. The electrochemical results imply that the conductive PPY-GO composite coatings significantly decrease the polarization current density of 304SS during potentiostatic polarization in the simulated PEMFC environment. The existence of GO in PPY matrix enhances the coatings adhesion strength and makes the diffusion pathway of corrosive species longer and more circuitous, further restricts their inward penetration. The PPY-GO coating with the optimized GO content of 1 mg mL −1 in the electrodeposition electrolyte shows the best corrosion resistance among the prepared coatings. This enhanced long-term corrosion protection of the PPY-GO composite coating in comparison with the pristine PPY coating is resulting from the enhanced physical barrier and anodic protection .
研究领域:
材料科学
·
电化学
·
燃料电池技术
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）